Thursday, February 18, 2010

A fabless provider of high-performance radio frequency integrated circuits, or RFICs. Thier innovation called UltraCMOS makes the integration of multiple RF, mixed-signal, and digital functions on a single chip.

Peregrine's PE97022 is a high-performance integer-N PLL capable of frequency synthesis up to 3.5 GHz. Features a 10/11 dual modulus prescaler, counters and a phase comparator.

"The TX/RX portion of the RF signal chain lies between the tuning/switching portion and any sort of power conversion components. This portion of the signal chain has potential for size reduction and increased efficiency...."

The Interactive Exercise shown here considers a similar, but different, circuit. Like the Interactive Example, the Interactive Exercise poses a problem, then accepts and checks the user's answer. Student learning is further supported by extensive help, in the form of worked example problems, available from within the Interactive Exercise using the “Worked Example” button.

The Circuit Design Lab consists of several Java applets, each providing an opportunity to experiment with the design of a particular circuit:

Variations of this problem are obtained using the “New Problem” button. We can peek at the answer using the “Show Answer” button. The Interactive Example and Exercises provide hundreds of addition practice problems with countless variations, all with answers that are checked immediately by the computer.

Noise Measurement - To accurately measure noise (or high frequency signals) with your oscilloscope it is necessary to reduce the radiated noise that is coupled to your probe.
The gEDA project is a set of tools for electrical circuit design, schematic capture, simulation, prototyping, and production. The PCB project contains a tool for printed circuit board layout.

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